SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('7a1e8610a9ba053e2ca92b875083b5a1','0','3.138.67.203','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715417805','board.php?boardid=446&sid=72b6bcef6dc15a8b6e52a36dd2a1d0d8','0','0','')
mysql error: Duplicate entry '7a1e8610a9ba053e2ca92b875083b5a1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 10:56
Script: /board.php?boardid=446&sid=72b6bcef6dc15a8b6e52a36dd2a1d0d8
Referer: